Hello,
I had a strange and hard to trace problem with Radiator server
that was connected to Oracle database (for maintaining session
database and accounting) and had a handler (for IPASS requests)
that would fork.
Every time the server forked our radiusd would lose it's connection
to database. That resulted in errors like:
ORA-03113: end-of-file on communication channel
(DBD ERROR: OCIStmtExecute)
in the middle of a query execution. The problem was hard to trace
because the reason for failure was not in the broken query but
somewhere else.
After many hours of work I discovered that closing a few file
descriptors just after the daemon forked a child (in the child
process) would prevent it from happening.
Here are those few lines of that dirty hack that did the job for me:
use IO::Handle;
in file radiusd.pl, sub safeFork:
elsif (defined $pid)
{
# Child.
# <ddzeko>
#
# close kid's file descriptors ;>>>
# (this will teach the kid to stay out of
# parent's database business)
#
if (1) {
my ($io) = new IO::Handle;
for (my $i = 3; $i < 20; $i++) {
$io->fdopen($i, 'r') && $io->close;
}
}
# </ddzeko>
return 1;
}
Greetings,
--damir;
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